{"id":131,"date":"2014-10-19T08:38:37","date_gmt":"2014-10-19T08:38:37","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/?page_id=131"},"modified":"2014-10-19T18:10:15","modified_gmt":"2014-10-19T18:10:15","slug":"electricity-energy-exercise-15","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/electricity-energy-exercise-15\/","title":{"rendered":"Electricity &amp; Energy Exercise 15"},"content":{"rendered":"<p>1.  Which takes more heat, melting ice or evaporating water?<\/p>\n<p>2.  Explain why ice is useful in coolers.<\/p>\n<p><a href=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysu2hwrk\/uploads\/sites\/5086\/2014\/10\/ElecEn-1_15a.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-148\" title=\"ElecEn 1_15a\" src=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysu2hwrk\/uploads\/sites\/5086\/2014\/10\/ElecEn-1_15a.png\" alt=\"\" width=\"468\" height=\"307\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysu2hwrk\/uploads\/sites\/5086\/2014\/10\/ElecEn-1_15a.png 468w, https:\/\/glow-prod-gc.s3.eu-west-1.amazonaws.com\/gc\/public\/hyndsecphysu2hwrk\/uploads\/sites\/5086\/2014\/10\/ElecEn-1_15a-300x196.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjECQaCWV1LXdlc3QtMSJIMEYCIQCOrvy%2FEdwKSVYUe7o71Sldkr8hk8AvGyJ5trGXeezXRgIhANQOgK9p2hWJXXNqN5eRQ2hl%2FDGrMjqYmqA%2BJcjoT6hxKsIFCO3%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQBRoMMjczNTcwMTk1NDMzIgwzFhg%2Bu6e80HncbvwqlgVggvOs1cR0iiMMAfDqiSgnQosRKvoH4r0CIYFTZHMJEIzBl1Z7BGgBkUMin6zdAoPbKXZtbjVZaSEjKxjIlwJMbjAz11NvGEhi6j4UA0%2BV%2F%2FrdiAo0E16dYho2zzFYyA2sz72hzUdXnd0iUmm1b9iHVFJVhUNBVF9H5LzvcpG397fDLi8MpZqK88UJ3VeVG7T1whvr8GvgcbyapnNMWZizYSibgL6MXrKiDBmg6b1J3s2%2FVb2h46X6OIbvkZZpyboTUl9KWMXULEvxScITLsUGt9sc2eAAVyhaO1WP%2FUjiOGVjanlyGrfPs10TS2LMSdHv2NwlQsyh2Ott2pZ%2FaaWchBrQMSdFM1oUs4%2B4werH2GSJ%2BIUfW6mWGbN2vrwFjolUmrjnOfmwsmAhbUZUe0RAnq%2B0Wpcqxa96C7BHI%2F%2BqrWkpL8%2B1Qp8SHxjPTtOk7cuqOAZS6MrRr2nKqEAxGHKHFtGyNOl4t%2F5XM4OEjZRXFPuT%2BKS97%2F1l6UG3c1lg34%2F2cjvHQ5GDKjBN7sRtwmdNBRPzibFhUdWcEQEU0e5r4HIitsWaXr5YeTPsysiEQG8hj6%2B7yDrBu1c6STkYW4Ull%2FtVaEgCyMQ93A3Z2RqkIpb6Lx1gQFr2j9sFACzrQ1NekN%2Fl1hp2apfA2Np1tzxLVsyBFSC7RM1%2BO3y%2BJ0wmtU7FZAJzfcyyavHQPGhBiJOIxtRyRg9yBgwcN7JPGyJcqkNXauwGzcJmmUPFIwCvvWg4lzk%2Fk97iVwoDuC0HsZrbT7b3Z4uSxr3k%2FSjGW%2BZmtLLQMZ3vztd2OQLqMq4%2F3GiUE9OQEk6We7UGbLFl%2FftvbLpcfRqWkkDTjXnuB%2Bz96ahJW%2B2SEPvb9wGU%2BFToceQi9%2FmH%2BDCNtNXOBjqwAXDEuL%2FWLnYaHovToQCf7KrJ%2F7FAV5gfSL3WRRrll%2BbGkmv1avFEjfHNwG0VQPu6puAt740Qwu4b5FjNZv9TF2Y2wg2iYzUKqSTLDmRSGQN8quCmm%2BhFhfb73T4K9OON%2B2jE%2FLYwM0ua0E7yXLiiOLFex4xjDbS6ivpXeHqbpZi0EJfstUzB460K6526yS4mxnF79p2Sh9IM%2F00Er3zwX5fhWljStuhUiZjP0JQaT7ad&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47U6K6PQV7R%2F20260407%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260407T202721Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=18e07e93074ffdd6e051d8ccd1e88f10ffa05f75b66a8e460dfe8d9ad977f323 300w\" sizes=\"auto, (max-width: 468px) 100vw, 468px\" \/><\/a><\/p>\n<p>3.  How much heat is given off when 3.2 kg of water freeze?  Assume the temperature stays constant at 0\u00baC.<\/p>\n<p>4.  How much heat is required to change 2.5 kg of water at 20.0 \u00baC to steam at 150  \u00baC?<\/p>\n<p>5.  How much heat is needed to change 2.0 kg of silver at 20. \u00baC into liquid silver?  Silver melts at 961\u00baC.<\/p>\n<p>6.  How much heat is needed to change .50kg of ice at \u201320.\u00baC into steam at 120\u00baC?<\/p>\n<p>7.  How much heat is released when 500.g of steam at 250 \u00baC is cooled to ice at \u201340. \u00baC?<\/p>\n<p>8.  How much heat must be added to a 25g ice cube at 0\u00baC to change it to water at 0\u00baC?<\/p>\n<p>9.  How much heat is lost when 0.10kg of steam at 100.\u00baC condenses to water at 80. \u00baC?<\/p>\n<p>10. How much heat is needed to change 0.10kg of ice at \u201320.\u00baC. to steam at 110\u00baC?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Which takes more heat, melting ice or evaporating water? 2. Explain why ice is useful in coolers. 3. How much heat is given off when 3.2 kg of water freeze? Assume the temperature stays constant at 0\u00baC. 4. How much heat is required to change 2.5 kg of water at 20.0 \u00baC to steam &hellip; <a href=\"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/electricity-energy-exercise-15\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Electricity &amp; Energy Exercise 15<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-131","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/pages\/131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/comments?post=131"}],"version-history":[{"count":2,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/pages\/131\/revisions"}],"predecessor-version":[{"id":155,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/pages\/131\/revisions\/155"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysu2hwrk\/wp-json\/wp\/v2\/media?parent=131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}